I wonder how many people are using the 3.8 AC rad for their v8's. Anyone here? Heres a fun fact, seems the 151 AC rad is the same part number as the 3.8 AC one. Ive heard of some people that overheated with 4cyl rads and some said they worked fine. I wonder if that could be the diffrence in the 140 and 151 radiators? I'm going to try the 151 AC rad with Taurus fan on a mild Vortec 350, mainly because its there now as an experiment. If it runs hot I have a Griffin universal to go in. Be a fun test anyhow, I'll shut it down if she hits 200 degrees.

We need a list of radiators that will work in the H body cars.. I found out today a 1988-93 chevy truck radiators are very close. 28" X 18" at lest thats what was in my sunbird.. What is the stock size of a H body radiators???

BillPappy wrote:We need a list of radiators that will work in the H body cars.. I found out today a 1988-93 chevy truck radiators are very close. 28" X 18" at lest thats what was in my sunbird.. What is the stock size of a H body radiators???

BillPappy wrote:..28" X 18" at lest thats what was in my sunbird.. What is the stock size of a H body radiators???

Pappy

Sunbirds were the only h-body to come with 18" tall radiators. The only ones I've seen were on factory v8s. I guess its because of the flat hood it can be taller than the others. Don't know for sure, maybe it would fit in a monza. The radiator I have now has a straight inlet. I spliced in a copper 45 degree plumbing coupler to kick it up and outward to clear the p/s pump.

Roger---------------------------------------------------------------UNLESS OTHERWISE SPECIFIEDDIMENSIONS ARE IN INCHES

WENT TO A LOCAL RAD. SHOP TODAY AND THEY FOUND A 3 CORE RADIATOR THAT HAS THE SAME DIM. AS MY STOCK 2 CORE - OBV. A LITTLE THICKER BUT NO PROB. THEY SAID THEY CAN PUT MY INLET AND OUTLETS ON THIS NEW RADIATOR FOR $20. I WILL LET YOU KNOW HOW IT TURNS OUT AND IF THE NEW THICKNESS IS PROB OR NOT. SHOULD BE ABLE TO GET OUT FOR UNDER 200 FOR A NEW ONE

From Hotrods to BicyclesThe brave may not live forever, but the cautious will never live at all

78spyder wrote:Heres a fun fact, seems the 151 AC rad is the same part number as the 3.8 AC one. Ive heard of some people that overheated with 4cyl rads and some said they worked fine. I wonder if that could be the diffrence in the 140 and 151 radiators?

You could be correct. The heavy-duty 140 radiator is smaller and only has 1-core.

Last edited by res0o7eb on Wed Aug 17, 2011 2:01 am, edited 3 times in total.

OK SO WHAT WILL FIT A 79 SUNBIRD W/ POWER STEERING THAT IS IN A 3 CORE. i HAVE A TWO CORE NOW AND ON A SIXTEY DEGREE DAY IT STILL RUNS 190 WITH NO THERMOSTAT. SO I KNOW IT WON'T HANDLE A 98 DEG. DAY LIKE WE HAVE IN THE SOUTH. I DON'T CARE IF I HAVE TO PUT ELECTRIC FANS ON IT INSTEAD OF A ENGINE DRIVEN ONE. I ALREADY HAVE ONE ON IT PLUS THE ENGINE FAN.

From Hotrods to BicyclesThe brave may not live forever, but the cautious will never live at all

Note; I mentioned that Discount Radiators - from the original post in this thread - no longer carries the Spectre CU533 Radiator. That is based on my personal experience last spring submitting an on-line order. I was refunded my money 3-days later after an email explaining that they are not available. But, Discount Radiators still list the CU533 on their web-site for $148.

Last edited by res0o7eb on Wed Aug 26, 2009 12:29 am, edited 1 time in total.